Cooling fan in combination with motor-driven exhaust air flap to reduce cooling time

LH 15/12 - LF 120/14

The LH 15/12 - LF 120/14 laboratory furnaces have been trusted for many years as professional chamber furnaces for the laboratory. These furnaces are available with either a robust insulation of light refractory bricks (LH models) or with a combination insulation of refractory bricks in the corners and low heat storage, quickly cooling fiber material (LF models). With a wide variety of optional equipment, these models can be optimally adapted to your processes.

Tmax 1200 °C, 1300 °C, or 1400 °C

Five-sided heating for very good temperature uniformity

Heating elements on support tubes ensure free heat radiation and a long service life

Protection of bottom heating and flat stacking surface provided by embedded SiC plate in the floor

Furnace chamber with high-quality fiber materials and SiC heating rods on both sides of the furnace

Saggars with top lid

Over-temperature limit controller

HTCT 03/14 - HTCT 08/16

These powerful laboratory muffle furnaces are available for temperatures up to 1400 °C, 1500 °C, 1550 °C or 1600 °C. The durability of the SiC rods in periodic use, in combination with their high heating speed, make these furnaces to all-rounders in the laboratory. Heating times of 40 minutes to 1400 °C can be achieved, depending on the furnace model and the conditions of use.

Tmax 1400 °C, 1500 °C, 1550 °C or 1600 °C

Working Temperature 1500 °C (for models HTC ../16), increased wear and tear of heating elements must be expected in case of working at higher temperatures

Model HTCT 01/16 with single phase connection

High-quality fiber material, selected for the working temperature

Housing made of sheets of textured stainless steel

Dual shell housing for low external temperatures and high stability

Optional flap door (HTC) which can be used as work platform or lift door (HTCT) with hot surface facing away from the operator (HTCT 01/16 only with lift door)

Switching system with solid-state-relays, power tuned to the SiC rods

Easy replacement of heating rods

Additional equipment

Over-temperature limit controller with manual reset for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the oven and load

Square saggar for charging of up to three layers

Lid for top saggar

Manual or automatic gas supply system

Adjustable air intake opening in the furnace door, exhaust air opening in the roof

Model

Tmax

Inner dimensions in mm

Volume

Outer dimensions in mm

Heating power in

Electrical

Weight

Minutes

°C

w

d

h

in l

W

D

H²

kW4

connection*

in kg

to Tmax³

HTC, HTCT 03/14

1400

120

210

120

3.0

400

535

530

9.0

3-phase¹

30

40

HTC, HTCT 08/14

1400

170

290

170

8.0

450

620

570

13.0

3-phase

40

40

HTC, HTCT 03/15

1500

120

210

120

3.0

400

535

530

9.0

3-phase¹

30

50

HTC, HTCT 08/15

1500

170

290

170

8.0

450

620

570

13.0

3-phase

40

50

HTCT 01/16

1550

110

120

120

1.5

340

300

460

3.5

single-phase

18

40

HTC, HTCT 03/16

1600

120

210

120

3.0

400

535

530

9.0

3-phase¹

30

60

HTC, HTCT 08/16

1600

170

290

170

8.0

450

620

570

13.0

3-phase

40

60

¹Heating only between two phases *Please see page 80 for more information about supply voltage²Plus maximum 270 mm for models HTCT when open³If connected at 230 V 1/N/PE rsp. 400 V 3/N/PE4Depending on furnace design connected load might be higher

Designed as tabletop models, these compact high-temperature chamber furnaces have a variety of advantages. The first-class workmanship using high-quality materials, combined with ease of operation, make these furnaces all-rounders in research and the laboratory. These furnaces are also perfectly suited for the sintering of technical ceramics, such as zirconium oxide dental bridges.

The electrically driven lift-bottom considerably allows for proper charging of the LHT/LB furnaces. The heating all around the cylindrical furnace chamber provides for an opitimal temperature uniformity. For model LHT 02/17 LB the charge can be placed in charge saggars made of technical ceramics. Up to three charge saggars can be stacked on top of each other resulting in a high productivity. Due to its volume model LHT 16/17 LB can also be used for applications in production.

LHT 04/16 SW with scale for measuring weight reduction during annealing and with gas supply system

Software for documentation of the temperature curve and combustion loss using a PC

LHT 04/16 SW and LHT 04/17 SW

These furnaces were specially developed to determine combustion loss during annealing and for thermogravimetric analysis (TGA) in the lab. The complete system consists of the high-temperature furnace for 1600 °C or 1750 °C, a table frame, precision scale with feedthroughs into the furnace and powerful software for recording both the temperature curve and the weight loss over time.

Technical description of the furnaces: see models LHT 04/16 and LHT 04/17

Model

Tmax

Inner dimensions in mm

Volume

Outer dimensions in mm

Heating power in

Electrical

Weight

Minutes

°C

w

d

h

in l

W

D

H

kW³

connection*

in kg

to Tmax²

LHT 04/16 SW

1600

150

150

150

4

655

370

890

5.0

3-phase¹

85

25

LHT 04/17 SW

1750

150

150

150

4

655

370

890

5.0

3-phase¹

85

40

¹Heating only between two phases *Please see page 80 for more information about supply voltage²If connected at 230 V 1/N/PE rsp. 400 V 3/N/PE³Depending on furnace design connected load might be higher